DuctLag A

Is manufacture from two layers of glass fibre with a lead core .It is extremely flexible and forms easily around curved surfaces .The inner layer of fibre is quilted with a scrim backing and the outer layer is faced with a Class 'O' aluminium foil. DuctLag A is suitable for use in applications requiring high levels of thermal and acoustic insulation.

DuctLag T

Is a composite panel manufactured from profiled melamine foam adhered to a barrier mat with a Class 'O' aluminium foil on the outer face. The profiled inner face enable square corners to be formed on the edges of rectangular ductwork. DuctLag H is suitable for use in ’clean rooms’ and hygienic areas and is used extensively in hospitals pharmaceutical plants and food production factories.

DuctLag P

Is a cost-effective, non-irritating layer of polyester adhered to a barrier mat with Class 'O' aluminum foil on the outer face.

DuctLag H

Is a singe layer of acoustic barrier mat with a Class 'O' aluminium foil on the outer surface.

Application and Fixing
To ensure optimum performance from the application of DuctLag Acoustic Blankets it is important to follow these instructions.
DuctLag A, H and P
1. Wrap DuctLag around the ductwork or pipe taking care to overlap the lead barrier by at least 50mm. This can be achieved by paring back the lower layer of glass fibre, melamine foam or polyester blanket from the quit and the upper layer of the glass fibre, melamine foam or polyester blanket from the lower quit. This will expose the lead barrier cores enabling them to be overlapped as shown in the diagram below.
2. Seal the joints with DuctLag jointing tape available from Hodgson & Hodgson Group Ltd.
3. Where more than one blank of DuctLage is required to complete the application, the lead barrier core should be overlapped along all joint as detailed above.
4. Carefully cut DuctLag around any valves, brackets or other penetration, ensuring it fits tightly around the obstructions. Seal all the joints with DuctLag jointing tape. Failure to create a snug fit between the DuctLag and the obstruction as well as sealing the joints could adversely effect the acoustic performance.
5. Support DuctLag around the ductwork or pipe using either non-metallic banding at 500mm spacings or tightly wrapped wire netting
DuctLag T
6. Wrap DuctLag T around the ductwork or pipe taking care to overlap both vertical and horizontal joints by at least 50mm.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　CLASS"O" aluminum foil outer layer
　　　　　　　　　　　　　　 jointing tapc

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　inner layer of glass fibre, mclamine foam or
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 polyester blanket

　　lcad or polymeric barrier core